I don't even want to give Yellow Cab any stars- an...

I don't even want to give Yellow Cab any stars- and since one star says I hated it....I will choose that. We called THE NIGHT BEFORE and requested a cab for 3:30am the following morning to IAH for a 5am redeye flight. At 3:45am still no yellow cab, no call....nothing. We finally gave up on waiting on a car that was not coming and drove ourselves to the airport. At 4:20am, we received a call asking "Do you still need a cab"? We needed one 50 minutes earlier!!! Had we of counted on their service we would have missed our flight. Yellow Cab Houston SUCKS.